Brake fluids, which type for street and strip?
#2918034
05/03/21 02:02 PM
05/03/21 02:02 PM
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Joined: Aug 2003
Posts: 43,095 Bend,OR USA
Cab_Burge
OP
I Win
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OP
I Win
Joined: Aug 2003
Posts: 43,095
Bend,OR USA
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I'm confused on which type, 3,4, or 5 brake fluid to use on my street and strip cars I've heard and seen comments to NOT use type 5 on these cars, I'm wondering why All help appreciated
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Brake fluids, which type for street and strip?
[Re: Cab_Burge]
#2924973
05/20/21 06:45 PM
05/20/21 06:45 PM
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Joined: Jan 2003
Posts: 11,991 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 11,991
Benton, IL.
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I started using DOT5 well over 25 years ago. Primarily to save the paint on my restorations. I always get the stuff all over everything. DOT 5 does not hurt the paint, and I have certainly got enough of it on the paint to know. I have never had any problems out of 5 and I use it in all my old Mopars. But if the problems with paint on the 3 and 4 isn't an issue for you, then there is no real reason to due the changeover, in my opinion.
Master, again and still
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Re: Brake fluids, which type for street and strip?
[Re: DaveRS23]
#2926611
05/25/21 07:14 PM
05/25/21 07:14 PM
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Joined: Mar 2005
Posts: 1,545 Seattle, WA
375inStroke
Special needs person
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Special needs person
Joined: Mar 2005
Posts: 1,545
Seattle, WA
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If it's a real track car, then check out DOT5.1 fluid. We use Motul brand in our endurance racing track car. Basically, the higher the number, the higher the boiling point. DOT is silicone based, but DOT5.1 is the same chemical type as DOT3 and 4, so you can mix them if you wish.
Last edited by 375inStroke; 05/25/21 07:18 PM.
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Re: Brake fluids, which type for street and strip?
[Re: autoxcuda]
#2926774
05/26/21 09:22 AM
05/26/21 09:22 AM
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Joined: Jan 2011
Posts: 79 KY
95Kota408
member
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member
Joined: Jan 2011
Posts: 79
KY
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I have heard that using synthetic brake fluid in systems that don't require it might be harmful to the rubber seals inside the system. Any truth to that? I recently had a master cylinder cap with the rubber expanded so much I could barely get the cap on the master cylinder. I flushed the system and replaced the master cylinder and put DOT 3 back in out of precaution since I wasn't sure if what I heard was true. This was in a 99 Durango 5.9L
Last edited by 95Kota408; 05/26/21 09:22 AM.
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Re: Brake fluids, which type for street and strip?
[Re: 375inStroke]
#2927128
05/26/21 11:37 PM
05/26/21 11:37 PM
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Joined: Aug 2003
Posts: 43,095 Bend,OR USA
Cab_Burge
OP
I Win
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OP
I Win
Joined: Aug 2003
Posts: 43,095
Bend,OR USA
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If it's a real track car, then check out DOT5.1 fluid. We use Motul brand in our endurance racing track car. Basically, the higher the number, the higher the boiling point. DOT is silicone based, but DOT5.1 is the same chemical type as DOT3 and 4, so you can mix them if you wish. This a drag race car that will be ran at our local 1/8 mile track to see if the owner likes drag racing or not. It might run 120.+ MPH in the 1/8, we will see I do not know anything about that motor, I may offer to make 1 or 2 passes in the car to make sure it goes straight and stops before advising him to go WOT in it I will suggest that he tries a couple of part throttle launches and lifting at half track and go from there. If he likes it and wants to go for it I'll advise him to foot brake launching it at different RPM before switching to trans brake launching it later at WOT
Last edited by Cab_Burge; 05/26/21 11:38 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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